The BarcodeDetector API recognizes various barcode formats in images.

The getHitTestResults() method of an XRFrame object helps place objects in an augmented reality session by finding where cast rays intersect with real-world geometry.

The optional desynchronized parameter of a canvas's getContext() method permits the browser to draw a WebGL canvas independently of the event loop. This can reduce drawing latency.

The optional desynchronized parameter of a canvas's getContext() method permits the browser to draw a WebGL2 canvas independently of the event loop. This can reduce drawing latency.

The SVG 1.1 image format has several components that were excluded from SVG 2, such as fonts, alternate glyphs, and the xlink namespace.

The ui-serif, ui-sans-serif, ui-monospace and ui-rounded values for the font-family CSS property use device-default user interface fonts for text.

The periodic background synchronization API fires a recurring periodicsync event in a service worker. You can use this to update data in the background at regular intervals.

The navigator.contacts API allows you to ask users to share limited details about entries in their contact list with your application.

The optional alpha parameter of a 2D canvas's getContext() method sets whether the canvas has an alpha transparency channel. If set to false, then this permits the browser to optimize compositing for an opaque canvas.

The :host-context() CSS pseudo-class selects the containing element of the shadow tree in which it is used if that element or an ancestor matches the provided selector.

Background fetch downloads data in the background even when the web page is closed.

The background synchronization API registers a service worker callback to run only when the device is no longer offline. You can use this to let users continue using your app while offline and synchronize with a server after reconnecting.

The navigator.getBattery() API obtains information about the device's battery, including charge level and status. Also known as the Battery API.

Customized built-in elements are HTML elements that extend built-in elements using the is attribute, to add new behaviors that you define.

Deprecation reporting sends a report to a URL nominated by the Reporting-Endpoints header or the ReportingObserver API when a page uses a deprecated API or other browser feature.

An element performance entry measures the time to render elements that have the elementtiming attribute.

The Feature-Policy response header sets whether a policy-controlled feature, such as an API, may be used in a document. Not to be confused with permissions policy.

The FederatedCredential API represents the details required to authenticate a user using a third-party identity provider. Not to be confused with federated credential management (FedCM).

The gamepad attribute of an XRInputSource represents an XR input device, such as a motion controller, that reports data from physical inputs (such as buttons, touch pads, and triggers).

The Gyroscope API reads the angular velocity of a device in three dimensions.

The trackVisibility parameter for the IntersectionObserver constructor enables tracking the visibility of an element, to detect if it may be obscured by other content or visual effects. Also known as IntersectionObserver v2.

Intervention reporting sends a report to a URL nominated by the Reporting-Endpoints header when the browser has not honored an application's request, contrary to specified behavior, such as for security or privacy reasons.

The navigator.keyboard.lock() API allows you to capture keys that are normally reserved by the operating system. It can be used to provide an immersive fullscreen experience such as games.

The navigator.keyboard.getLayoutMap() API returns a map from key codes to human readable key names. It can be used to describe buttons to the user when using the keyboard as a set of buttons, such as in games.

A longtask performance entry measures tasks that occupy the UI thread for 50 milliseconds or more, a metric for input latency, delayed animations, and other sources of "jank."

The AbsoluteOrientationSensor and RelativeOrientationSensor APIs describe the physical orientation of a device in three-dimensional space, either in relation to the Earth's coordinate system or in relation to the device's own orientation, respectively.

The page lifecycle API helps you safely handle page suspensions or discards from memory. The freeze and resume events fire when the browser suspends or resumes a page from memory while the document.wasDiscarded property reports whether the page was reloaded after being dropped.

The PasswordCredential API represents a username and password.

The payment handler API registers a web application as a payment handler and responds to payment requests in the browser's user interface, rather than redirecting users to a separate site to complete a payment.

The Presentation API shows or controls content on another display, such as a network-connected TV or projector.